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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sun Mar 08, 2015 4:12 am Post subject: |
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Your blowing fuses and pushing smoke. So unless you can use a DMM and a soldering iron there is not much to be said. The dead battery will not cause these things.
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Sun Mar 08, 2015 4:20 am Post subject: |
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I got both and know how to use them.
I do not know where to start though.
I will replace all fuses tomorrow and fire up again.
What could cause the non running fans or the non working led on the psu? It seems to me both my lvps and rgb card are shot.
What would be the cost of replacing those?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sun Mar 08, 2015 4:39 am Post subject: |
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Well I would first try to get a good battery on that CPU board. Even if you have to solder some wires in place of the battery there now and connect to a battery holder containing any of (2 AA), (2 AAA) or a coin cell battery and holder. I think it was 3v if I remember.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sun Mar 08, 2015 9:48 pm Post subject: |
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| Luuk neele wrote: | | Really? Nobody has any idea? |
like MAc said, it might be a parts mule. The machine came from an Ampro dealer, and it's highly likely he robbed it for parts to repair other ampros = parts mule. So depending on how many bad parts he put back in it, might be a tough repair.
With that many problems, you would really a complete working 2nd machine to get it going. there are a number of people here with ampro parts who might be able to help, but you would be importing boxes of stuff from the US.
Personally, I would say unless your a hard-core electronics guy who loves broken things, pass on this and get your money back
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Sun Mar 08, 2015 11:52 pm Post subject: |
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| draganm wrote: | | Luuk neele wrote: | | Really? Nobody has any idea? |
like MAc said, it might be a parts mule. The machine came from an Ampro dealer, and it's highly likely he robbed it for parts to repair other ampros = parts mule. So depending on how many bad parts he put back in it, might be a tough repair.
With that many problems, you would really a complete working 2nd machine to get it going. there are a number of people here with ampro parts who might be able to help, but you would be importing boxes of stuff from the US.
Personally, I would say unless your a hard-core electronics guy who loves broken things, pass on this and get your money back |
Actually I do love fixing broken stuff.
But to the point that it doesn't cost me an arm and a leg.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Mon Mar 09, 2015 12:56 am Post subject: |
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| Luuk neele wrote: | Actually I do love fixing broken stuff.
But to the point that it doesn't cost me an arm and a leg. |
fixing stuff is good, but the second part will be a problem because you will be shipping from the US to EU. Looking at $25. minimum for a normal sized box, so a $25. part becomes a $50. part 
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Mon Mar 09, 2015 7:11 am Post subject: |
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That's actually pretty doable.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Mon Mar 09, 2015 9:07 pm Post subject: |
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I can give you a bunch of boards if you want for cheap. Do you have the schematics? I think Kal has them in a hidden file here on the main site, and I can get him to post them if you want. I MAY have a spare s/manual as well, hard copy, and maybe on disc.
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Mon Mar 09, 2015 9:39 pm Post subject: |
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so far i have replaced the CPU battery with a lithium-ion 3.7v battery (should work , right?)
further i took out the smps (or lvps) and checked for problems, currently assessing the situation.
i need to get a -20v line running or the projector wont work correctly (fans wont spin, no red led on back)
and the smps will overheat.
what boards do you have and how much would it cost? i'll probably need a rgb cart and likely another smps if this one appears to be broken beyond repair.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Mon Mar 09, 2015 11:08 pm Post subject: |
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| Luuk neele wrote: | | i'll probably need a rgb cart and likely another smps if this one appears to be broken beyond repair. |
Ahhh, there is no such thing. 
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Mon Mar 09, 2015 11:12 pm Post subject: |
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ive put everything back for a test drive 
what happens? system comes online (no more memory faillure and no mor weird errors)
smps lights +40 and -20 are off , fuses are in place.
i hear a nice HV crackle on the tubes, and i see the electron gun shooting.
then on remote:
error rgb channel1
and -20v faillure
system powers off
i dont know the rgb error but the -20v is the smps  now if i could find where the problem lies this thing will work like a charm again!
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Mon Mar 09, 2015 11:16 pm Post subject: |
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Put DMM on DC voltage, neg probe on chassis, pos probe test both sides of -20v fuse when powering up.
Curt, I'm guess it is ok to trouble shoot online since you were going to offer service manual?
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Mon Mar 09, 2015 11:26 pm Post subject: |
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in standby the switch with +40 gives 56volts
the fuse with -20 gives -40 volts
on powerup the fuse with +40 gives 68volts
the fuse with -20 gives -42 volts
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Mon Mar 09, 2015 11:39 pm Post subject: |
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Check the voltage at the other fuses and see if they are what they should be or different.
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Mon Mar 09, 2015 11:53 pm Post subject: |
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-9 fuse has -18v
-40 has -87v
+25 is 30v
+20 is 19v
-25 has -46
+9 has 9 volt
+40 has 56 volt ------------ NO LIGHT
-20 has -42 volt ------------ NO LIGHT
+190 has 228v
fuse labeled FIL varies between 9 and 3.5 volt
this seems quite out of whack, i am beginning to suspect that the smps is just broken.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Tue Mar 10, 2015 2:23 am Post subject: |
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Where are you grounding the neg probe?
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Tue Mar 10, 2015 7:02 am Post subject: |
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I put the neg probe on side of chassis.
Bare metal
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Tue Mar 10, 2015 8:08 am Post subject: |
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| Luuk neele wrote: | | so far i have replaced the CPU battery with a lithium-ion 3.7v battery (should work , right?) |
Hi,
I don't think that a (rechargeable!) li-ion battery is a good replacement. According to the schematics (can be found here: http://lowtek.ca/ampro/files/) this should be a (non-rechargeable!) 3.6V lithium primary cell which will hold up much longer. For the moment it will work and there's no immediate need for action as long as the battery that was mounted has been charged beforehand...
Regards,
barclay66
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Luuk neele
Joined: 04 Mar 2015
Posts: 186
Location: Wijk bij duurstede, the Netherlands.
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| Posted: Tue Mar 10, 2015 9:20 am Post subject: |
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the system uses a trickle charge to keep the (old non rechargeable!) battery going, thats why it held up for some for 15 years.
i replaced it with a 3.7v 1800Mah lithium-ion battery out of a PS3 controller. the trickle charge will keep the lithium-ion charged, also a li-ion discharges itself very slowly. also, its 1800 mah so it will hold up much longer than the keeper 2 battery.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Tue Mar 10, 2015 9:43 am Post subject: |
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OK, if You say so...
It's just that the datasheet of the BQ2201 to which the battery is connected doesn't mention that any charging is going on there...
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